Finding the Fourth Proportional to 3,880,183.12, 5,354,817.90 and 2,161,304.40
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Solution
The fourth proportional to 3,880,183.12, 5,354,817.90 and 2,161,304.40 is: 2,982,692.09
Step by Step Solution
- Step 1: Write the proportion equation
3,880,183.12 : 5,354,817.90 = 2,161,304.40 : x - Step 2: Convert to fraction form
3,880,183.12/5,354,817.90 = 2,161,304.40/x - Step 3: Cross multiply
3,880,183.12x = 5,354,817.90 × 2,161,304.40 - Step 4: Simplify right side
3,880,183.12x = 11,573,391,488,468.76 - Step 5: Solve for x
x = 11,573,391,488,468.76/3,880,183.12 - Step 6: Final answer
x = 2,982,692.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.